2010 Yamaha Motorsports Apex LTX GT Owners Manual - Page 52

2010 Yamaha Motorsports Apex LTX GT Manual

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Periodic maintenance and adjustment 4. Remove the headlight unit bolts, and then lift up the headlight unit. 1 1 1. Spark plug gap 2. Spark plug reach Before installing any spark plug, measure the electrode gap with a wire thickness gauge and adjust to specification. Spark plug gap: 0.7-0.8 mm (0.028-0.031 in) When installing the spark plug, always clean the gasket surface. Wipe off any grime from the threads and tighten the spark plug to the specified torque. Spark plug tightening torque: 12.5 Nm (1.25 m·kgf, 9.0 ft·lbf) ECS00382 1. Headlight unit bolt 5. Turn the idle adjusting screw in or out to adjust the engine idling speed. 1. Idle adjusting screw NOTICE Make sure that the spark plug caps are securely installed. Otherwise the spark plug caps could be damaged due to engine vibration. ESU11803 Standard engine idling speed: 1400-1600 r/min 6. Install the headlight unit, making sure to insert the projections on the headlight unit stay into the slots on the bottom of the headlight unit. Adjusting the engine idling speed 1. 2. Place the snowmobile on a level surface and apply the parking brake. Remove the shroud, the left and right side covers, and the top cover. (See page 43 for removal procedures.) Start the engine and warm it up. 3. 46

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Periodic maintenance and adjustment
46
Before installing any spark plug, measure the
electrode gap with a wire thickness gauge
and adjust to specification.
When installing the spark plug, always clean
the gasket surface. Wipe off any grime from
the threads and tighten the spark plug to the
specified torque.
NOTICE
ECS00382
Make sure that the spark plug caps are se-
curely installed. Otherwise the spark plug
caps could be damaged due to engine vi-
bration.
ESU11803
Adjusting the engine idling
speed
1.
Place the snowmobile on a level surface
and apply the parking brake.
2.
Remove the shroud, the left and right
side covers, and the top cover. (See page
43 for removal procedures.)
3.
Start the engine and warm it up.
4.
Remove the headlight unit bolts, and then
lift up the headlight unit.
5.
Turn the idle adjusting screw in or out to
adjust the engine idling speed.
6.
Install the headlight unit, making sure to
insert the projections on the headlight
unit stay into the slots on the bottom of
the headlight unit.
1.
Spark plug gap
2.
Spark plug reach
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Spark plug tightening torque:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
1.
Headlight unit bolt
1.
Idle adjusting screw
Standard engine idling speed:
1400–1600 r/min
1
1